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x in (-oo:+oo)
1 = (1/2)*(4*x+2) // - (1/2)*(4*x+2)
1-((1/2)*(4*x+2)) = 0
(-1/2)*(4*x+2)+1 = 0
1-1/2*(4*x+2) = 0
1-1/2*(4*x+2) = 0
-2*x = 0
-2*x = 0
-2*x = 0 // : -2
x = 0
x = 0
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